Siemens gigaset s450 ip 사용자 설명서

Gigaset S450 IP LBA / SGP / A31008-M1713-Y221-1-7619 / web_server.fm / 30.8.07

Ve

rs

ion 4,

 16

.09.

2005

You can make general and connection-

specific settings to improve the voice qual-

ity for VoIP telephony. 

¤

Open the following Web page: 

 

¢

 

¢

. 

The voice quality for VoIP connections is 

mainly determined by the voice codec 

used for transferring the data and the 

available bandwidth of your DSL connec-

tion. 
In the case of the voice codec, the voice 

data is digitalised (coded / decoded) and 

compressed. A "better" codec (better voice 

quality) means more data needs to be to 

be transferred, i.e. perfect voice data 

transfer requires a DSL connection with a 

larger bandwidth. 
The following voice codecs are supported 

by your phone:

Excellent voice quality (comparable 

with ISDN). The necessary bandwidth is 

64 kbit/s per voice connection. 

Good voice quality (inferior to that with 

G.711 but better than with G.729). 
Your phone supports G.726 with a 

transmission rate of 32 kbit/s per voice 

connection. 

Average voice quality. The necessary 

bandwidth is less than 8 kbit/s per voice 

connection. 

Both sides of a phone connection (caller/

sender side and receiver side) must use 

the same voice codec. The voice codec is 

negotiated between the sender and the 

recipient when establishing a connection. 

You can influence the voice quality by 

selecting (bearing in mind the bandwidth 

of your DSL connection) the voice codecs 

your phone is to use, and specifying the 

order in which the codecs are to be sug-

gested when a VoIP connection is estab-

lished. 

The settings in this area influence all VoIP 

connections (VoIP phone numbers). 

Generally speaking, you can make 

three VoIP calls simultaneously on your 

phone.  If, however, your DSL connec-

tion has a narrow bandwidth, there 

may be problems if three VoIP calls are 

made at the same time. The data is no 

longer transferred properly (long voice 

delay, data losses etc.). 

¤

Activate the 

 option next to 

 to prevent any further 

parallel VoIP phone connections 

being established. 

¤

If you wish to permit three VoIP con-

nections, activate the 

 option.

If you do not use your Gigaset.net connection 

for six weeks, it is automatically deactivated. 

You cannot be reached for calls from the 

Gigaset.net. 
The connection is reactivated:
– as soon as you start a search in the 

Gigaset.net directory (page 25) or 

– make a call via the Gigaset.net (dial a 

number with #9 at the end) or 

– activate the connection via the Web config-

urator as described above.

Please note: If only one VoIP connection is 

permitted, the following VoIP network services 

are no longer available:
– Call waiting 

Call waiting is not displayed during a call via 

VoIP. 

– External consultation call from a VoIP call 
– Toggling and initiating a conference call via 

VoIP